首页
登录
职称英语
Most earthquakes occur within the upper 15 miles of the earth’s surface. But
Most earthquakes occur within the upper 15 miles of the earth’s surface. But
游客
2023-12-23
10
管理
问题
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about 460 miles. Their number decreases as the depth increases. At about 460 miles one earthquake occurs only every few years. Near the surface earthquakes may run as high as 100 in a month, but the yearly average does not vary much. In comparison with the total number of earthquakes each year, the number of disastrous earthquakes is very small.
The extent of the disaster in an earthquake depends on many factors. If you carefully build a toy house with an erect set, it will still stand no matter how much you shake the table. But if you build a toy house with a pack of cards, a slight shake of the table will make it fall. An earthquake in Agadir, Morocco, was not strong enough to be recorded on distant instruments, but it completely destroyed the city. Many stronger earthquakes have done comparatively little damage. If a building is well constructed and built on solid ground, it will resist an earthquake. Most deaths in earthquakes have been due to faulty building construction or poor building sites. A third and very serious factor is panic. When people rush out into narrow streets, more deaths will result.
The United Nations has played an important part in reducing the damage done by earthquakes. It has sent a team of experts to all countries known to be affected by earthquakes. Working with local geologists and engineers, the experts have studied the nature of the ground and the type of most practical building code for the local area. If followed, these suggestions will make disastrous earthquakes almost a thing of the past.
There is one type of earthquake disaster that little can be done about. This is the disaster caused by seismic sea waves, or tsunamis. (These are often called tidal waves, but the name is incorrect. They have nothing to do with tides. ) In certain areas, earthquakes take place beneath the sea. These submarine earthquakes sometimes give rise to seismic sea waves. The waves are not noticeable out at sea because of their long wave length. But when they roll into harbors, they pile up into walls of water 6 to 60 feet high. The Japanese call them "tsunamis", meaning "harbor waves", because they reach a sizable height only in harbors.
Tsunamis travel fairly slowly, at speeds up to 500 miles an hour. An adequate warning system is in use to warn all shores likely to be reached by the waves. But this only enables people to leave the threatened shores for higher ground. There is no way to stop the oncoming wave. [br] Which article is this passage most probably excerpted from?
选项
A、An advertisement.
B、A novel.
C、Nature and Human Being.
D、Science Fiction.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3299483.html
相关试题推荐
Withinaveryshorttime,however,theincongruityofplayinglivelymusictoa
Themanhadarathershadyoccupationandmadealotofmoneywithinashortper
Toweakenthedamageforearthquakes,scientistsareworkingonwaystoenablea
MostChinesepeoplewenttoworkbybikewithinliving________.A、mindB、knowledg
Itisrecognizedthatthisscientisthasattainedeminencewithinhisresearcha
TheUStroopsaregoingtodrawbackfromIraqwithin4months.[br][originalt
TheUStroopsaregoingtodrawbackfromIraqwithin4months.[br][originalt
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
[originaltext]Earthquakesareviolent,destructive—andunpredictable!Theo
随机试题
A、Hestilllivedinhiscollegedormroom.B、Hemadealivingbysellingwinebo
在战争制胜问题上,()是决定因素,无论时代条件如何发展,战争形态如何演变,这一
下列属于普通年金形式的项目有()。A.定期定额支付养老金 B.偿债基金 C.
某企业五年前利用贷款购置设备,贷款1500万元,年利率7%,第5年年末一次还本付
斜拉桥主跨振型排序与简支梁的基本一致。
从所给四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.
肝素静脉给药的原因是A.口服首过效应消除明显B.大分子并带大量负电荷C.胃中易被
在个人住房贷款业务中,贷后管理工作不包括()。A.合同签约 B.贷款档案
全面依法治国,需要解决法治建设不适应、不符合推进国家治理体系和治理能力现代化目标
2018年6月6日,甲公司在P银行开立主办账户,并与其签订协议开通
最新回复
(
0
)